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https://issues.apache.org/jira/browse/HDFS-6647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14057103#comment-14057103
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Colin Patrick McCabe commented on HDFS-6647:
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Thanks, Kihwal. These fixes are super important. +1 from me as well
> Edit log corruption when pipeline recovery occurs for deleted file present in
> snapshot
> --------------------------------------------------------------------------------------
>
> Key: HDFS-6647
> URL: https://issues.apache.org/jira/browse/HDFS-6647
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode, snapshots
> Affects Versions: 2.4.1
> Reporter: Aaron T. Myers
> Assignee: Kihwal Lee
> Priority: Blocker
> Attachments: HDFS-6647-failing-test.patch, HDFS-6647.patch,
> HDFS-6647.v2.patch
>
>
> I've encountered a situation wherein an OP_UPDATE_BLOCKS can appear in the
> edit log for a file after an OP_DELETE has previously been logged for that
> file. Such an edit log sequence cannot then be successfully read by the
> NameNode.
> More details in the first comment.
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